No apple touch icon is specified and "Missing theme-color"

Hey maryenvato,
Thank you for your patience, to correct the “apple touch icon” please use a favicon generator service to create your favicons and then follow the install instructions:

I recommend uploading your actual favicon and corasponing image via FTP to your root directory as that is where the web browsers look for them. To add the link tags to the head of your site add this code to the end of your child theme functions.php file in Appearance ▸ Editor:

function add_favicon() {
    echo '<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">' . "\n";
    echo '<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">' . "\n";
    echo '<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">' . "\n";
    echo '<link rel="manifest" href="/site.webmanifest">' . "\n";
  }
  add_action( 'wp_head', 'add_favicon' );

please adjust to suit your situation.
If this seems complicated, then there are many WordPress plugins that will do this for you.
I do not know what your “SEO Scanner” means by “Missing theme-color”, perhaps the “SEO Scanner” has a FAQ that could explain?

Best regards,
Mike